Problem: The Bert Crane Wastewater Treatment Plant in Atwater, California, needed an effective, low-maintenance aeration solution for its two aerobic digesters. Traditional blowers and diffusers posed challenges including high energy usage, clogging and costly maintenance that required entering the tanks. The facility, operated by Veolia, sought a solution that could meet stringent California discharge regulations while simplifying operations and improving biosolids quality.
Solution: Mazzei Injector Company provided a blowerless, diffuser-free aeration system using venturi injectors. Each digester was equipped with six 12-inch injectors connected to chopper pumps that recirculate basin water through the injectors. As water flows through the venturi, a
Venturi Injectors Employed in Diffuser-Free Aeration System
This case study of the Bert Crane Wastewater Treatment Plant in Atwater, California, shows how an aeration system using venturi injectors from Mazzei Injector Company reduced maintenance costs
Oct 14, 2025
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